[INFO] cloning repository https://github.com/flysand7/rust-precedence-parser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/flysand7/rust-precedence-parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflysand7%2Frust-precedence-parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflysand7%2Frust-precedence-parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a647eedfb8880341997310e40355c57bce5b15ee
[INFO] checking flysand7/rust-precedence-parser against try#bf5ff6675cf10ce009ac02007b064a7cfc4509ac for pr-140558
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflysand7%2Frust-precedence-parser" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/flysand7/rust-precedence-parser on toolchain bf5ff6675cf10ce009ac02007b064a7cfc4509ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/flysand7/rust-precedence-parser
[INFO] finished tweaking git repo https://github.com/flysand7/rust-precedence-parser
[INFO] tweaked toml for git repo https://github.com/flysand7/rust-precedence-parser written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/flysand7/rust-precedence-parser already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking flysand7/rust-precedence-parser against try#bf5ff6675cf10ce009ac02007b064a7cfc4509ac for pr-140558
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflysand7%2Frust-precedence-parser" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/flysand7/rust-precedence-parser on toolchain bf5ff6675cf10ce009ac02007b064a7cfc4509ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/flysand7/rust-precedence-parser
[INFO] finished tweaking git repo https://github.com/flysand7/rust-precedence-parser
[INFO] tweaked toml for git repo https://github.com/flysand7/rust-precedence-parser written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/flysand7/rust-precedence-parser already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8656a4bbaf34b0fad112ae8fd46ebf738ab7483cfd58e30ca39de97eabc49912
[INFO] running `Command { std: "docker" "start" "-a" "8656a4bbaf34b0fad112ae8fd46ebf738ab7483cfd58e30ca39de97eabc49912", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8656a4bbaf34b0fad112ae8fd46ebf738ab7483cfd58e30ca39de97eabc49912", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8656a4bbaf34b0fad112ae8fd46ebf738ab7483cfd58e30ca39de97eabc49912", kill_on_drop: false }`
[INFO] [stdout] 8656a4bbaf34b0fad112ae8fd46ebf738ab7483cfd58e30ca39de97eabc49912
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d1b7ff644638d566d141fe7cbc1e4850959cbf6628cc69063a2eca0eb7bff73
[INFO] running `Command { std: "docker" "start" "-a" "7d1b7ff644638d566d141fe7cbc1e4850959cbf6628cc69063a2eca0eb7bff73", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-expr-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]   --> src/ast.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let w = f.width().unwrap_or(0);
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]   --> src/ast.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let w = f.width().unwrap_or(0);
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_str` is never used
[INFO] [stdout]   --> src/lex.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 63 | impl Lexer<'_> {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 72 |     pub fn from_str(str: &str) -> Lexer {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_str` is never used
[INFO] [stdout]   --> src/lex.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 63 | impl Lexer<'_> {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 72 |     pub fn from_str(str: &str) -> Lexer {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `None` is never constructed
[INFO] [stdout]   --> src/parser.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub enum Assoc {
[INFO] [stdout]    |          ----- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 19 |     None,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Assoc` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `None` is never constructed
[INFO] [stdout]   --> src/parser.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub enum Assoc {
[INFO] [stdout]    |          ----- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 19 |     None,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Assoc` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `from_string` and `from_decoder` are never used
[INFO] [stdout]    --> src/parser.rs:95:12
[INFO] [stdout]     |
[INFO] [stdout] 94  | impl Parser<'_> {
[INFO] [stdout]     | --------------- associated functions in this implementation
[INFO] [stdout] 95  |     pub fn from_string(s: &str) -> Parser {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |     pub fn from_decoder(d: Decoder) -> Parser {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `from_string` and `from_decoder` are never used
[INFO] [stdout]    --> src/parser.rs:95:12
[INFO] [stdout]     |
[INFO] [stdout] 94  | impl Parser<'_> {
[INFO] [stdout]     | --------------- associated functions in this implementation
[INFO] [stdout] 95  |     pub fn from_string(s: &str) -> Parser {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 |     pub fn from_decoder(d: Decoder) -> Parser {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter` is never used
[INFO] [stdout]   --> src/parsers.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 1  | pub trait LookaheadParser {
[INFO] [stdout]    |           --------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn iter<'a>(&'a mut self) -> LookaheadIterator<'a, Self> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter` is never used
[INFO] [stdout]   --> src/parsers.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 1  | pub trait LookaheadParser {
[INFO] [stdout]    |           --------------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 12 |     fn iter<'a>(&'a mut self) -> LookaheadIterator<'a, Self> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `operator_levels` should have an upper case name
[INFO] [stdout]   --> src/parser.rs:46:7
[INFO] [stdout]    |
[INFO] [stdout] 46 | const operator_levels: &[OperatorLevel] = &[
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `OPERATOR_LEVELS`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `operator_levels` should have an upper case name
[INFO] [stdout]   --> src/parser.rs:46:7
[INFO] [stdout]    |
[INFO] [stdout] 46 | const operator_levels: &[OperatorLevel] = &[
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `OPERATOR_LEVELS`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "7d1b7ff644638d566d141fe7cbc1e4850959cbf6628cc69063a2eca0eb7bff73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d1b7ff644638d566d141fe7cbc1e4850959cbf6628cc69063a2eca0eb7bff73", kill_on_drop: false }`
[INFO] [stdout] 7d1b7ff644638d566d141fe7cbc1e4850959cbf6628cc69063a2eca0eb7bff73